Need to ensure you're getting 25-35g's of Fiber each day? Make FiberOne Original cereal for breakfast. One cup cereal with a cup of skim milk is 200 calories and 28 grams of Fiber. I add a sprinkle of cinnamon with a pack of blue and pink sweetener. Yummy, filling, and very low calorie.
I find it more empowering to let my NO stay as NO when tempted with food after my calories are spent for the day. It's a battle of the will and the one that grows is the one used the most. Saying NO and sticking to it does get easier as you do it more.